EP1982134B1 - Roller hearth furnace for heating and/or temperature equalisation of steel or steel alloy continuous cast products and arrangement thereof before a hot strip final rolling mill - Google Patents
Roller hearth furnace for heating and/or temperature equalisation of steel or steel alloy continuous cast products and arrangement thereof before a hot strip final rolling mill Download PDFInfo
- Publication number
- EP1982134B1 EP1982134B1 EP06829688A EP06829688A EP1982134B1 EP 1982134 B1 EP1982134 B1 EP 1982134B1 EP 06829688 A EP06829688 A EP 06829688A EP 06829688 A EP06829688 A EP 06829688A EP 1982134 B1 EP1982134 B1 EP 1982134B1
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- EP
- European Patent Office
- Prior art keywords
- hearth furnace
- roller
- roller hearth
- furnace
- outlet side
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 title claims description 8
- 239000010959 steel Substances 0.000 title claims description 8
- 238000005096 rolling process Methods 0.000 title description 10
- 229910000851 Alloy steel Inorganic materials 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000009749 continuous casting Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 4
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 2
- 238000011143 downstream manufacturing Methods 0.000 claims 1
- 238000011067 equilibration Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 244000144980 herd Species 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
- F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/142—Plants for continuous casting for curved casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Definitions
- the invention relates to a roller hearth furnace for heating and / or temperature compensation of continuous casting products, which in particular consist of steel or steel materials and can be loaded and unloaded in furnace-like partial lengths on rolls through the furnace chamber, and a method for using the roller hearth furnace before a hot strip finishing train, in the hot strip, etc. rolled, cooled and wound in a coiler station to wound coils.
- roller hearth furnaces are very long and associated with thermal losses and cause by the long-term resting on the rollers by Zundaufbackept impressions on the continuous casting product bottom, which later lead during rolling to a reduced quality of the rolling stock, especially rolled strip.
- Roller hearth furnaces for heating and / or temperature compensation of continuous casting products are known from the documents IT IT 1 236 130 B .
- WO 94/18514 A and DE 35 25 457 A1 known.
- a change in the thermal efficiency is not possible with these roller hearth furnaces.
- the invention has for its object to improve the conventional roller hearth furnace to the extent that a reduction in its length and a shortening of an entire system (such as. A CSP / Compact Strip Production) consisting of continuous casting and hot strip finishing mill achieved at a better thermal efficiency and thus saving energy. At the same time, less damaging impressions should be created on the continuous casting bottom.
- the stated object is achieved according to the invention in a roller hearth furnace according to the preamble of claim 1, characterized in that the first roller row running in the longitudinal direction of the furnace and / or the second roller row each form a heating zone.
- This will provide improved thermal efficiency and supports the energy savings.
- the slabs can be heated more if necessary. This is an extension of the product range of the casting-rolling plant connected.
- Another embodiment for improving the temperature level is that in the buffer zone, a further, switchable heating zone and / or a warming zone are provided.
- the lifting elements may consist of lifting bars according to a further feature of the invention.
- Thin slabs which after heating and / or temperature compensation in the roller hearth furnace in a hot strip finishing rollers (descaled, cut to a partial length Rolled to hot strip, cooled and wound in a coiler station to wound coils, is carried out according to another invention in that in a multi-strand casting a common roller hearth furnace or a separate roller hearth furnace per strand, each with an inlet side and an outlet side of parallel rows of rollers and a provided between these lying buffer zone of lifting elements for the subsequent common process route.
- the advantages are the shortening of the whole plant and the energy-saving and thus the improved thermal efficiency and the mechanical improvements.
- the outlet side of a roller hearth furnace jointly provided for a two-strand casting installation be placed in the line of the subsequent process route, so that a mirror-image position of two inlet sides with the same rows of rollers and a central outlet side with a row of rollers.
- the following hot strip finishing train can thus be supplied at shorter intervals with partial lengths of the casting strand.
- a third alternative envisages that for a multi-strand caster and a separate roller hearth furnace, a ferry operatively connecting both roller hearth furnaces will be provided at the outlet side and before the following process route. As a result, a partial length of the following process route can be supplied by both casting plants of a two-strand casting plant.
- the invention also takes into account a conventional roller hearth furnace which is present in front of a single- or multi-strand continuous casting plant and which can be further used in addition to a roller hearth furnace with an inlet and outlet side and a buffer zone consisting of lifting elements, a roller hearth furnace operating in parallel in the longitudinal direction and that the roller hearth furnaces connect to another, connected to the following process route roller hearth furnace with inlet side and parallel outlet side and a buffer zone arranged therebetween of lifting elements (fourth alternative).
- a conventional roller hearth furnace which is present in front of a single- or multi-strand continuous casting plant and which can be further used in addition to a roller hearth furnace with an inlet and outlet side and a buffer zone consisting of lifting elements, a roller hearth furnace operating in parallel in the longitudinal direction and that the roller hearth furnaces connect to another, connected to the following process route roller hearth furnace with inlet side and parallel outlet side and a buffer zone arranged therebetween of lifting elements (fourth alternative).
- CSP compact caster rolling mill
- the roller hearth furnace 1 ( Fig. 1 ) is used for heating and / or keeping warm and / or temperature equalization of continuous casting 2 ( Fig. 2 to 5 ), which are cast from slab or flat thin strands 3 (so-called thin slabs).
- continuous casting 2 ( Fig. 2 to 5 )
- Fig. 2 to 5 continuous casting 2
- the cast strand 6a formed in the continuous casting mold 6 is cooled and further cooled in a back-up roll stand 7 and supported.
- the respective continuous casting product 2 is freed of scale in a descaling device 8 and cut in a pair of scissors 9 to partial lengths 10 of several meters in length.
- the oven and roll-fair part lengths 10 are determined by the strand dimensions and the following rolling process.
- the partial lengths 10 become ( Fig. 1 ) on an inlet side 11 via a first, in the longitudinal direction 12 of the furnace 1 extending roller row 13 transported.
- the length of the rollers 13a corresponds to the width of the continuous casting product 2 with a surcharge.
- a second row of rollers 15 is arranged on an outlet side 14, which is also formed from such rollers 13a.
- the continuous casting products leave the row of rollers 15 on the outlet side 14 in the longitudinal direction 12.
- a buffer zone 16 is formed, which consists of not shown lifting elements 17.
- the lifting elements 17 provide for the transverse transport of the continuous casting product 2 in the direction of arrow 18.
- the first, in the longitudinal direction 12 extending roller row 13 and / or the second row of rollers 15 form a heating zone 19 of conventional heaters, such as. Gas burners, induction heaters u.
- a further, switchable heating zone 19 and / or a warming zone may be provided.
- the lifting elements 17 consist of conventional lifting beam 17 a.
- the shear 9 is followed by a described roller hearth furnace 1 per casting strand, with different embodiments of the arrangement being alternatively provided.
- On the outlet side 14 is located in the example of Fig. 4 a ferry 20 to connect a two-strand caster via an emergency shear 21, another descaling device 22 in front of a multi-stand hot strip finishing train 23.
- the metal strip After rolling to thin hot strip 24, the metal strip is cooled in a cooling section 25 to steel strip with a corresponding structure and wound in a coiler station 26 to wound coils 27.
- the process route 28 of the rolling is so far in all embodiments of the Fig. 2 to 5 equal.
- Fig. 2 is in a multi-strand caster 29 each have a separate roller hearth furnace 1 (according to the invention, a so-called. Roll-stroke hearth furnace) as to Fig. 1 described, arranged per string.
- the partial lengths 10 are transported by each roller hearth furnace 1 laterally in the line of the process route 28 (first alternative).
- Fig. 4 Although two separate roller hearth furnaces 1 are provided for each strand, which are not on the line of the subsequent process route 28. Therefore, the partial lengths 10 are transported via the ferry 20 on the line of the common process route 28 (third alternative).
- Fig. 5 shows that on a (left) strand following a longitudinally working roller hearth furnace 30, is used and the roller hearth furnace 1 according to the invention for the other (right) strand core is used.
- the partial lengths 10 can then be conveyed again together via a roller-hearth furnace according to the invention until the following process route 28 (fourth alternative).
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Die Erfindung betrifft einen Rollenherdofen zum Aufheizen und / oder Temperaturausgleichen von Stranggießprodukten, die insbesondere aus Stahl oder Stahlwerkstoffen bestehen und in ofengerechten Teillängen auf Rollen durch den Ofenraum ein- und wieder austransportierbar sind, sowie ein Verfahren zur Verwendung des Rollenherdofens vor einer Warmband-Fertigwalzstraße, in der das Warmband u.a. gewalzt, gekühlt und in einer Haspelstation zu Wickelbunden gewickelt wird.The invention relates to a roller hearth furnace for heating and / or temperature compensation of continuous casting products, which in particular consist of steel or steel materials and can be loaded and unloaded in furnace-like partial lengths on rolls through the furnace chamber, and a method for using the roller hearth furnace before a hot strip finishing train, in the hot strip, etc. rolled, cooled and wound in a coiler station to wound coils.
Derartige Rollenherdöfen sind sehr lang und mit thermischen Verlusten verbunden und verursachen durch das langzeitige Aufliegen auf den Rollen durch Zunderaufbackungen Eindrücke auf der Stranggießprodukt-Unterseite, die später beim Walzen zu einer verminderten Qualität des Walzgutes, insbesondere von Walzband führen.Such roller hearth furnaces are very long and associated with thermal losses and cause by the long-term resting on the rollers by Zundaufbackungen impressions on the continuous casting product bottom, which later lead during rolling to a reduced quality of the rolling stock, especially rolled strip.
Ein solcher, vor einer Warmband-Fertigwalzstraße angeordneter Rollenherdofen ist bspw. aus der
Die Zunderabfuhr ist bei durch Rollen gebildeten Herden zwar durch den Rollenabstand günstiger in kurzen Abständen möglich, jedoch drücken sich Zunderreste durch das Gewicht von schweren Stranggießprodukten, wie bspw. Brammen-Teillängen in den Strangwerkstoff ein und verursachen die erwähnten Oberflächenfehler, die sich, wie vorstehend beschrieben, bis in das Fertigprodukt fortsetzen. Ein mit Rollen versehener Hubherd ist bspw. aus der
Rollenherdöfen zum Aufheizen und/oder Temperaturausgleichen von Stranggießprodukten sind aus den Druckschriften
Der Erfindung liegt die Aufgabe zugrunde, den herkömmlichen Rollenherdofen dahingehend zu verbessern, dass eine Kürzung seiner Länge und eine Verkürzung einer Gesamtanlage (wie bspw. einer CSP- / Compact Strip Production) bestehend aus Stranggießanlage und Warmband-Fertigwalzstraße bei einem besseren thermischen Wirkungsgrad erzielt und somit Energie gespart wird. Gleichzeitig sollen weniger schädliche Eindrücke auf der Stranggießprodukt-Unterseite entstehen.The invention has for its object to improve the conventional roller hearth furnace to the extent that a reduction in its length and a shortening of an entire system (such as. A CSP / Compact Strip Production) consisting of continuous casting and hot strip finishing mill achieved at a better thermal efficiency and thus saving energy. At the same time, less damaging impressions should be created on the continuous casting bottom.
Die gestellte Aufgabe wird erfindungsgemäß bei einem Rollenherdofen nach dem Oberbegriff von Anspruch 1 dadurch gelöst, dass die erste in Längsrichtung des Ofens verlaufende Rollenreihe und / oder die zweite Rollenreihe jeweils eine Aufheizzone bilden. Dadurch werden ein verbesserter thermischer Wirkungsgrad und die Energieersparnis unterstützt. Die Brammen können bei Bedarf stärker aufgeheizt werden. Damit ist eine Erweiterung des Produktspektrums der Gieß-Walz-Anlage verbunden.The stated object is achieved according to the invention in a roller hearth furnace according to the preamble of
Eine andere Ausgestaltung zur Verbesserung des Temperaturniveaus besteht darin, dass in der Pufferzone eine weitere, zuschaltbare Aufheizzone und /oder eine Warmhaltezone vorgesehen sind.Another embodiment for improving the temperature level is that in the buffer zone, a further, switchable heating zone and / or a warming zone are provided.
Die Hubelemente können nach einem weiteren Merkmal der Erfindung aus Hubbalken bestehen.The lifting elements may consist of lifting bars according to a further feature of the invention.
Ein Verfahren zur Verwendung eines solchen Rollenherdofens beim Stranggießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen, zu Brammen- oder flachen Dünnsträngen, sog. Dünnbrammen, die nach Aufheizen und / oder Temperaturausgleichen im Rollenherdofen in einer Warmband-Fertigwalzsträße (entzundert, auf eine Teillänge geschnitten) zu Warmband gewalzt, gekühlt und in einer Haspelstation zu Wickelbunden gewickelt wird, erfolgt nach der weiteren Erfindung dadurch, dass in einer Mehrstrang-Gießanlage ein gemeinsamer Rollenherdofen oder jeweils ein getrennter Rollenherdofen pro Strangader mit jeweils einer Einlaufseite und einer Auslaufseite aus parallelen Rollenreihen und einer zwischen diesen liegenden Pufferzone aus Hubelementen für die nachfolgende gemeinsame Prozessroute vorgesehen ist. Die Vorteile sind die Verkürzung der Gesamtanlage und die Energie-Erspamis und damit der verbesserte thermische Wirkungsgrad und die mechanischen Verbesserungen.A method for using such a roller hearth furnace in the continuous casting of liquid metals, in particular liquid steel materials, slabs or flat thin strands, so-called. Thin slabs which after heating and / or temperature compensation in the roller hearth furnace in a hot strip finishing rollers (descaled, cut to a partial length Rolled to hot strip, cooled and wound in a coiler station to wound coils, is carried out according to another invention in that in a multi-strand casting a common roller hearth furnace or a separate roller hearth furnace per strand, each with an inlet side and an outlet side of parallel rows of rollers and a provided between these lying buffer zone of lifting elements for the subsequent common process route. The advantages are the shortening of the whole plant and the energy-saving and thus the improved thermal efficiency and the mechanical improvements.
Nach einer Ausgestaltung (zweite Alternative) wird vorgeschlagen, dass die Auslaufseite eines gemeinsam für eine Zwei-Strang-Gießanlage vorgesehenen Rollenherdofens in die Linie der nachfolgenden Prozessroute gelegt ist, so dass eine spiegelbildliche Lage von zwei Einlaufseiten mit gleichen Rollenreihen und einer mittigen Auslaufseite mit einer Rollenreihe besteht. Die nachfolgende Warmband-Fertigwalz-straße kann somit in kürzeren Abständen mit Teillängen des Gießstrangs beliefert werden.According to one embodiment (second alternative), it is proposed that the outlet side of a roller hearth furnace jointly provided for a two-strand casting installation be placed in the line of the subsequent process route, so that a mirror-image position of two inlet sides with the same rows of rollers and a central outlet side with a row of rollers. The following hot strip finishing train can thus be supplied at shorter intervals with partial lengths of the casting strand.
Eine dritte Alternative sieht vor, dass für eine Mehrstrang-Gießanlage und einen jeweils separaten Rollenherdofen eine beide Rollenherdöfen betrieblich verbindende Fähre an die Auslaufseite anschließend und vor der folgenden Prozessroute vorgesehen ist. Dadurch kann von beiden Gieß-Anlagen einer Zwei-Strang-Gießanlage eine Teillänge der folgenden Prozessroute zugeführt werden.A third alternative envisages that for a multi-strand caster and a separate roller hearth furnace, a ferry operatively connecting both roller hearth furnaces will be provided at the outlet side and before the following process route. As a result, a partial length of the following process route can be supplied by both casting plants of a two-strand casting plant.
Die Erfindung berücksichtigt auch einen vor einer ein- oder mehradrigen Stranggießanlage vorhandenen herkömmlichen Rollenherdofen, der dadurch weiter genutzt werden kann, dass neben einem Rollenherdofen mit einer Einlauf- und Auslaufseite und einer zwischen diesen liegenden Pufferzone aus Hubelementen ein in Längsrichtung parallel arbeitender Rollenherdofen vorgesehen ist und dass die Rollenherdöfen an einen weiteren, an die folgende Prozessroute angeschlossenen Rollenherdofen mit Einlaufseite und paralleler Auslaufseite und einer zwischen diesen angeordneten Pufferzone aus Hubelementen anschließen (vierte Alternative).The invention also takes into account a conventional roller hearth furnace which is present in front of a single- or multi-strand continuous casting plant and which can be further used in addition to a roller hearth furnace with an inlet and outlet side and a buffer zone consisting of lifting elements, a roller hearth furnace operating in parallel in the longitudinal direction and that the roller hearth furnaces connect to another, connected to the following process route roller hearth furnace with inlet side and parallel outlet side and a buffer zone arranged therebetween of lifting elements (fourth alternative).
Schließlich ist vorgesehen, dass die Prozessroute in einer kompakten Gieß-Walz-Anlage (CSP) aus einer Warmband-Fertigwalzstraße mit sieben Walzgerüsten besteht.Finally, it is envisaged that the process route in a compact caster rolling mill (CSP) consists of a hot strip finishing train with seven rolling mills.
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt, die nachfolgend näher erläutert werden.In the drawings, embodiments of the invention are shown, which are explained in more detail below.
Es zeigen:
- Fig. 1
- einen Grundriss des erfindungsgemäßen Rollenherdofens,
- Fig. 2
- eine perspektivische Seitenansicht der Gesamtanlage mit einer ers- ten Alternative zur Anordnung des Rollenherdofens,
- Fig. 3
- eine perspektivische Seitenansicht der Gesamtanlage mit einer zwei- ten Alternative des Rollenherdofens,
- Fig. 4
- eine perspektivische Seitenansicht der Gesamtanlage mit einer drit- ten Alternative zur Anordnung des erfindungsgemäßen Rollenherd- ofens und
- Fig. 5
- eine perspektivische Seitenansicht der Gesamtanlage mit einer vier- ten Alternative zur Anordnung des Rollenherdofens.
- Fig. 1
- a plan view of the roller hearth furnace according to the invention,
- Fig. 2
- 3 is a perspective side view of the entire system with a first alternative to the arrangement of the roller hearth furnace,
- Fig. 3
- 3 a perspective side view of the entire plant with a second alternative of the roller hearth furnace,
- Fig. 4
- a perspective side view of the entire system with a third alternative to the arrangement of the roller hearth furnace according to the invention and
- Fig. 5
- a perspective side view of the entire system with a fourth alternative to the arrangement of the roller hearth furnace.
Der Rollenherdofen 1 (
Die Teillängen 10 werden (
Analog zur Einlaufseite 11 ist auf einer Auslaufseite 14 eine zweite Rollenreihe 15 angeordnet, die ebenfalls aus solchen Rollen 13a gebildet ist. Die Stranggießprodukte verlassen die Rollenreihe 15 auf der Auslaufseite 14 in Längsrichtung 12. Zwischen der ersten Rollenreihe 13 und der zweiten Rollenreihe 15 ist eine Pufferzone 16 gebildet, die aus nicht näher dargestellten Hubelementen 17 besteht. Die Hubelemente 17 sorgen für den Quertransport des Stranggießproduktes 2 in Pfeilrichtung 18. Die erste, in Längsrichtung 12 verlaufende Rollenreihe 13 und / oder die zweite Rollenreihe 15 bilden eine Aufheizzone 19 aus üblichen Heizeinrichtungen, wie bspw. Gasbrennern, Induktions-Heizeinrichtungen u. dgl. In der Pufferzone 16 kann eine weitere, zuschaltbare Aufheizzone 19 und / oder eine Warmhaltezone vorgesehen sein. Die Hubelemente 17 bestehen aus üblichen Hubbalken 17a.Analogous to the
An die Schere 9 schließt sich jeweils pro Gießstrangader ein beschriebener Rollenherdofen 1 an, wobei verschiedene Ausführungsformen der Anordnung alternativ vorgesehen sind. Auf der Auslaufseite 14 befindet sich im Beispiel der
Nach dem Walzen zu dünnem Warmband 24 wird das Metallband in einer Kühlstrecke 25 zu Stahlband mit entsprechendem Gefüge abgekühlt und in einer Haspelstation 26 zu Wickelbunden 27 aufgewickelt. Die Prozessroute 28 des Walzens ist insoweit in allen Ausführungsbeispielen der
Gemäß
In
Gemäß
Aus
- 11
- RollenherdofenRoller hearth furnace
- 22
- Stranggießproduktcast product
- 33
- Brammenstrang, flacher DünnstrangSlab strand, flat thin strand
- 44
- Gießpfanneladle
- 55
- PfannendrehturmLadle turret
- 66
- Stranggießkokillecontinuous casting
- 6a6a
- Gießstrangcast strand
- 77
- StützwalzengerüstSupporting roll stand
- 88th
- Entzunderungseinrichtungdescaling
- 99
- Scherescissors
- 1010
- Teillängepartial length
- 1111
- Einlaufseiteinlet side
- 1212
- Längsrichtunglongitudinal direction
- 1313
- erste Rollenreihefirst row of rolls
- 13a13a
- Rollenroll
- 1414
- Auslaufseiteoutlet side
- 1515
- zweite Rollenreihesecond row of rollers
- 1616
- Pufferzonebuffer zone
- 1717
- Hubelementelifting elements
- 17a17a
- Hubbalkenwalking beam
- 1818
- Pfeilrichtungarrow
- 1919
- Aufheizzoneheating zone
- 2020
- Fähreferry
- 2121
- Notschereemergency shears
- 2222
- Entzunderungseinrichtungdescaling
- 2323
- Warmband-FertigwalzstraßeHot strip finishing train
- 2424
- Warmbandhot strip
- 2525
- Kühlstreckecooling section
- 2626
- Haspelstationcoiling station
- 2727
- Wickelbundwound coil
- 2828
- Prozessrouteprocess route
- 2929
- Mehrstrang-GießanlageMore strand caster
- 3939
- in Längsrichtung arbeitender Rollenherdofenlongitudinally working roller hearth furnace
Claims (7)
- Roller hearth furnace (1) for heating and/or temperature equalisation of continuously cast products (2), which consist particularly of steel or steel materials and which are transportable in furnace-ready part lengths (10) on rollers (13a) into, through and back out of the furnace chamber, that a first roller row (13), which extends in longitudinal direction (12) of the furnace (1), of rollers (13a) having a length corresponding with the width of the continuously cast product (2) is arranged on an inlet side (11), that a second roller row (15) parallel to the first is provided on an outlet side (14) and that a buffer zone (16) with lifting elements (17) for transverse transport of the continuously cast product (2) is arranged between the first and second roller rows (13, 15), characterised in that the first roller row (13) extending in the longitudinal direction (12) of the furnace (1) and/or the second roller row (15) forms or each form a heating zone (19).
- Roller hearth furnace according to claim 1, characterised in that a further, connectible heating zone (19) and/or a keeping-warm zone is or are provided in the buffer zone (16).
- Roller hearth furnace according to claim 1 or 2, characterised in that the lifting elements (17) consist of walking beams (17a).
- Method of using a roller hearth furnace (1) according to any one of claims 1 to 3 in the continuous casting of liquid metals to form slab strands or flat thin strands (3), so-termed thin slabs, which after heating and/or temperature equalisation in the roller hearth furnace (1) are rolled in a hot strip finishing train (23) to form, inter alia, hot strip (24), cooled and wound in a coiling station (26) to form wound coils (27), characterised in that provided in a multi-strand casting plant (29) is a common roller hearth furnace (1) or a separate roller hearth furnace (1) per strand, each with an inlet side (11) and a parallel outlet side (14) consisting of roller rows (13; 15) and a buffer zone (16), which is disposed therebetween, consisting of lifting elements (17) for the downstream common process route (28).
- Method according to claim 4, characterised in that the outlet side (14) of a roller hearth furnace (1), which is provided in common for a twin-strand casting plant (29), is placed in the line of the downstream process route (28) so that a mirror-image position of two inlet sides (11) with the same roller rows (13, 13) and a middle outlet side (14) with one roller row (15) is present.
- Method according to claim 4, characterised in that provided for a multi-strand casting plant (29) and a respective separate roller half furnace (1) is a ferry (20), which operationally connects the two roller hearth furnaces (1, 1), connected with the outlet side (14) and ahead of the following process route (28).
- Method according to claim 4, characterised in that apart from a roller hearth furnace (1) with an inlet side and outlet side (11, 14) and a buffer zone (16), which lies therebetween, consisting of lifting elements (17) use is made of a roller hearth furnace (30) operating in parallel in longitudinal direction (12) and that the roller hearth furnace (1, 30) is connected with a further roller hearth furnace (1), which is connected with the following process route (28), with inlet side (11) and parallel outlet side (14) and a buffer zone (18), which is arranged therebetween, consisting of lifting elements (17).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006005635A DE102006005635A1 (en) | 2006-02-08 | 2006-02-08 | Roller hearth furnace for heating and / or temperature compensation of continuous casting products made of steel or steel alloy and its arrangement in front of a hot strip finishing train |
PCT/EP2006/012164 WO2007090455A1 (en) | 2006-02-08 | 2006-12-18 | Roller hearth furnace for heating and/or temperature equalisation of steel or steel alloy continuous cast products and arrangement thereof before a hot strip final rolling mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1982134A1 EP1982134A1 (en) | 2008-10-22 |
EP1982134B1 true EP1982134B1 (en) | 2011-03-16 |
Family
ID=37951499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06829688A Active EP1982134B1 (en) | 2006-02-08 | 2006-12-18 | Roller hearth furnace for heating and/or temperature equalisation of steel or steel alloy continuous cast products and arrangement thereof before a hot strip final rolling mill |
Country Status (18)
Country | Link |
---|---|
US (1) | US8376734B2 (en) |
EP (1) | EP1982134B1 (en) |
JP (1) | JP2009525874A (en) |
KR (1) | KR101146931B1 (en) |
CN (1) | CN101365918B (en) |
AR (1) | AR059363A1 (en) |
AT (1) | ATE502271T1 (en) |
AU (1) | AU2006337956B2 (en) |
BR (1) | BRPI0621316A2 (en) |
CA (1) | CA2637464C (en) |
DE (2) | DE102006005635A1 (en) |
EG (1) | EG24856A (en) |
MY (1) | MY149470A (en) |
RU (1) | RU2387935C2 (en) |
TW (1) | TWI381142B (en) |
UA (1) | UA90782C2 (en) |
WO (1) | WO2007090455A1 (en) |
ZA (1) | ZA200806469B (en) |
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CN103648682B (en) * | 2011-07-15 | 2016-02-10 | 普锐特冶金技术日本有限公司 | Hot sheet manufacturing equipment and hot sheet manufacture method |
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ITUD20130128A1 (en) * | 2013-10-04 | 2015-04-05 | Danieli Off Mecc | STEEL PLANT MULTIPLE CO-LAMINATION LINE AND RELATED PRODUCTION METHOD |
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EP2944386A1 (en) * | 2014-05-13 | 2015-11-18 | Primetals Technologies Austria GmbH | Apparatus and method for production of long metal products |
KR102661327B1 (en) | 2015-04-16 | 2024-05-02 | 퀀텀스케이프 배터리, 인코포레이티드 | Lithium stuffed garnet setter plates for solid electrolyte fabrication |
WO2017015511A1 (en) | 2015-07-21 | 2017-01-26 | Quantumscape Corporation | Processes and materials for casting and sintering green garnet thin films |
DE102015216512A1 (en) * | 2015-08-28 | 2017-03-02 | Sms Group Gmbh | Plant according to the CSP concept and method for operating such a plant |
US9966630B2 (en) | 2016-01-27 | 2018-05-08 | Quantumscape Corporation | Annealed garnet electrolyte separators |
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AT519697B1 (en) * | 2017-03-03 | 2021-01-15 | Primetals Technologies Germany Gmbh | Process for the continuous production of steel strip |
IT201700067508A1 (en) | 2017-06-16 | 2018-12-16 | Danieli Off Mecc | CONTINUOUS CASTING METHOD AND ITS APPARATUS |
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-
2006
- 2006-02-08 DE DE102006005635A patent/DE102006005635A1/en not_active Withdrawn
- 2006-12-18 CN CN2006800524994A patent/CN101365918B/en active Active
- 2006-12-18 UA UAA200809967A patent/UA90782C2/en unknown
- 2006-12-18 US US12/223,740 patent/US8376734B2/en active Active
- 2006-12-18 JP JP2008553633A patent/JP2009525874A/en active Pending
- 2006-12-18 AU AU2006337956A patent/AU2006337956B2/en not_active Ceased
- 2006-12-18 KR KR1020087018349A patent/KR101146931B1/en not_active IP Right Cessation
- 2006-12-18 BR BRPI0621316-2A patent/BRPI0621316A2/en not_active Application Discontinuation
- 2006-12-18 DE DE502006009129T patent/DE502006009129D1/en active Active
- 2006-12-18 CA CA2637464A patent/CA2637464C/en not_active Expired - Fee Related
- 2006-12-18 MY MYPI20082688A patent/MY149470A/en unknown
- 2006-12-18 WO PCT/EP2006/012164 patent/WO2007090455A1/en active Application Filing
- 2006-12-18 RU RU2008128012/02A patent/RU2387935C2/en active
- 2006-12-18 AT AT06829688T patent/ATE502271T1/en active
- 2006-12-18 EP EP06829688A patent/EP1982134B1/en active Active
-
2007
- 2007-01-15 TW TW096101369A patent/TWI381142B/en not_active IP Right Cessation
- 2007-02-07 AR ARP070100520A patent/AR059363A1/en unknown
-
2008
- 2008-01-01 ZA ZA200806469A patent/ZA200806469B/en unknown
- 2008-07-18 EG EGNA2008001266 patent/EG24856A/en active
Also Published As
Publication number | Publication date |
---|---|
KR101146931B1 (en) | 2012-05-22 |
AU2006337956A2 (en) | 2008-09-25 |
RU2387935C2 (en) | 2010-04-27 |
CN101365918A (en) | 2009-02-11 |
TWI381142B (en) | 2013-01-01 |
JP2009525874A (en) | 2009-07-16 |
MY149470A (en) | 2013-08-30 |
BRPI0621316A2 (en) | 2011-12-06 |
AR059363A1 (en) | 2008-03-26 |
AU2006337956A1 (en) | 2007-08-16 |
WO2007090455A1 (en) | 2007-08-16 |
EG24856A (en) | 2010-10-31 |
US8376734B2 (en) | 2013-02-19 |
CA2637464C (en) | 2012-06-05 |
DE502006009129D1 (en) | 2011-04-28 |
TW200730783A (en) | 2007-08-16 |
ATE502271T1 (en) | 2011-04-15 |
CN101365918B (en) | 2012-11-14 |
ZA200806469B (en) | 2009-03-25 |
UA90782C2 (en) | 2010-05-25 |
CA2637464A1 (en) | 2007-08-16 |
AU2006337956B2 (en) | 2011-07-21 |
EP1982134A1 (en) | 2008-10-22 |
US20090298001A1 (en) | 2009-12-03 |
KR20080091779A (en) | 2008-10-14 |
DE102006005635A1 (en) | 2007-08-09 |
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